we have taken the following facts from the archive:
OMEGA - gents pocket watch (no designation in lignes)
case no. 1'288'131
movement no. 1'248'889
manual wind movement cal. 19''' HN - grade C
manfactured and dispatched to Paris (France) on 06-30-1897.
Since march 1894 these movements got the name OMEGA, although
the watches had usually not yet this name. This was done since
1903, after the "movement" Omega cal. 19''' received a high
appreciation on the 1900 world exhibition in Paris (Grand Prix
Paris). Now the name OMEGA was not only mentioned on the
movement, but also on the dial, with the according logo.
The "A" between crown- and ratchet wheel has no special meaning.